I have a PowerPC...
this PowerPC need to get a memory upgrade
but, all ddr2 slots are busy.

so, HOW TO INCREASE THIS RAM WITH A EXTERNAL DDR?

note:

1) I don't need to use ssd, or flash drivers, they are very slow!
2) I have heard both express mini, and express card, can i accomplish this, with it?
3) Are There any ddr2 usb adpaters?
4) If not, Using the memory of another PC over the network, it will work?

I like to use tmpfs, this is very quickly, but use a lot of mem, thanks for all aswer, and sorry my bad english.

Not to mention a "ddr2 usb adpater" would be detrimental to performance anyways. The memory's speed would be limited by the speed of USB (likely 2.0 == 480Mbit/s).
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John TDec 30 '09 at 21:33

+1 agreed! I didn't go in to technical details but that comes under "Asking for trouble!"...! At the end of the day, he may be thinking of things such as ReadyBoost/ReadyDrive on Windows, but IMHO, when you look at the performance and price, you are just better off getting memory instead.
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William HilsumDec 30 '09 at 21:39

Okey the speedy of usb is very slow rather than ddr 2 slots, but i'm looking for latency performance, and is not more quickly than ddr2..
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drigoSkalWalkerDec 30 '09 at 22:22

If you find SSD and flash drives 'too slow' you're not going to find anything faster, especially not via USB - and even still the best those could be used for (aside from storage memory) is a cache system (see Windows ReadyBoost for an example).

You're best bet is probably to figure out what kind of motherboard you're using, and/or the specific RAM is uses, and see if there are bigger modules you can get to replace what's already in there (check with www.kingston.com).